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[tor-commits] [tor/maint-0.2.2] Fix a rare memleak during stats writing



commit f30327449009a7f00b0f5c2bd09a7eff615df3dd
Author: Sebastian Hahn <sebastian@xxxxxxxxxxxxxx>
Date:   Wed Jun 8 21:35:26 2011 +0200

    Fix a rare memleak during stats writing
    
    If rep_hist_buffer_stats_write() was called unitinitalized, we'd leak
    memory.
---
 changes/coverity_maint |    1 +
 src/or/rephist.c       |    6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/changes/coverity_maint b/changes/coverity_maint
index 6d60355..e7be90a 100644
--- a/changes/coverity_maint
+++ b/changes/coverity_maint
@@ -5,4 +5,5 @@
     - Add some forgotten return value checks during unit tests. Found
       by coverity.
     - Don't use 1-bit wide signed bit fields. Found by coverity.
+    - Fix a rare memory leak during stats writing. Found by coverity.
 
diff --git a/src/or/rephist.c b/src/or/rephist.c
index 242fe81..54593a0 100644
--- a/src/or/rephist.c
+++ b/src/or/rephist.c
@@ -2451,8 +2451,8 @@ rep_hist_buffer_stats_write(time_t now)
   int processed_cells[SHARES], circs_in_share[SHARES],
       number_of_circuits, i;
   double queued_cells[SHARES], time_in_queue[SHARES];
-  smartlist_t *str_build = smartlist_create();
-  char *str = NULL, *buf=NULL;
+  smartlist_t *str_build = NULL;
+  char *str = NULL, *buf = NULL;
   circuit_t *circ;
 
   if (!start_of_buffer_stats_interval)
@@ -2460,6 +2460,8 @@ rep_hist_buffer_stats_write(time_t now)
   if (start_of_buffer_stats_interval + WRITE_STATS_INTERVAL > now)
     goto done; /* Not ready to write */
 
+  str_build = smartlist_create();
+
   /* add current circuits to stats */
   for (circ = _circuit_get_global_list(); circ; circ = circ->next)
     rep_hist_buffer_stats_add_circ(circ, now);

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